What is the correct order of structures as you move from outside a muscle cell, to deep inside it?
A) fiber, myofibril, myofilament B) myofilament, fiber, myofibril
C) myofibril, myofilament, fiber D) myofilament, myofibril, fiber
Answer: A
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Sympathetic stimulation of the kidney results in
A. constriction of afferent arterioles and an increase in the surface area of the glomerulus. B. constriction of afferent arterioles and a decrease in the surface area of the glomerulus. C. dilation of afferent arterioles and an increase in the surface area of the glomerulus. D. dilation of afferent arterioles and a decrease in the surface area of the glomerulus.
Calculate the mean arterial pressure (MAP) for each example listed.
A. a person with a blood pressure of 120/80 mm Hg B. a person with a blood pressure of 130/95 mm Hg
During thyroid hormone secretion,
a. the follicular cells phagocytize a piece of colloid. b. T4 and T3 are split off of thyroglobulin by lysosomal enzymes within the follicular cell and subsequently diffuse out of the cell into the blood. c. T4 and T3 are secreted by exocytosis of the colloid that has been internalized by the follicular cells. d. both (a) and (b) above. e. both (a) and (c) above.
Name four different bone markings associated with the proximal portion of the ulna
A) olecranon, trochlear notch, coronoid process, and radial notch B) trochlea, medial epicondyle, lateral epicondyle, coronoid fossa C) olecranon fossa, trochlea, greater tubercle, lesser tubercle D) ulnar notch, head of the ulna, olecranon, ulnar styloid process E) distal radio-ulnar notch, ulnar notch, interosseous membrane, radial notch